ISO INTERNATIONAL STANDARD. Office furniture Office work chairs Test methods for the determination of stability, strength and durability

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1 INTERNATIONAL STANDARD ISO First edition Office furniture Office work chairs Test methods for the determination of stability, strength and durability Mobilier de bureau Sièges de travail de bureau Méthodes d'essai pour la détermination de la stabilité, de la résistance et de la durabilité Reference number ISO 21015:2007(E) ISO 2007

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3 Contents Page Foreword... iv 1 Scope Normative references Terms and definitions General test conditions Preliminary preparation Test equipment Application of forces Tolerances Sequence of testing Inspection and assessment of results Test apparatus Test surface Stops Seat-loading pad Smaller seat-loading pad Local loading pad Back-loading pad Arm-rest durability test apparatus Strap Stability-loading device Loading discs Test surface for castor durability Loading points Loading point A Loading point B Loading point C Loading point D Loading point E Loading point F Loading point G Loading point H Loading point J Test methods Stability Static-load tests Durability tests Test report Annex A (informative) Guidance for the choice of forces, cycles, etc., for stability, strength and durability tests General principles Annex B (normative) Seat-loading pad data Annex C (normative) Stability-loading device data ISO 2007 All rights reserved iii

4 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO was prepared by Technical Committee ISO/TC 136, Furniture. iv ISO 2007 All rights reserved

5 INTERNATIONAL STANDARD ISO 21015:2007(E) Office furniture Office work chairs Test methods for the determination of stability, strength and durability 1 Scope This International Standard specifies test methods for determining the stability, strength and durability of office work chairs. Guidance is given on the choice of forces, cycles, etc., for these tests. The tests are designed to be applied to an article of furniture that is fully assembled and ready for use. The dimensions in the tests are applicable to office work chairs intended for adult persons. The tests consist of the application, to various parts of the item, of forces simulating normal functional use, as well as misuse that can reasonably be expected to occur. The tests are designed to evaluate properties without regard to materials, design/construction or manufacturing processes. The test results are valid only for the article tested. When the test results are intended to be applied to other similar articles, it is important that the test specimen be representative of the production model. Tests carried out according to this International Standard are intended to demonstrate the ability of the item to give satisfactory service in its intended environment. The tests have been developed for units/components that have not been in use. However, when properly justified, they can be used for fault investigation. Data are given for the design of seat-loading pads (Annex B) and for the design of stability-loading pad (Annex C). This International Standard does not give any product requirements. These can be specified in a requirements document. If this is not available, possible forces and cycles are suggested in Annex A (informative). These forces and cycles can be used for adults regardless of their weight and number of working hours. This International Standard does not specify type approval tests for chair components. Assessment of ageing and degradation is not included. The tests are not intended to assess the durability of upholstery, i.e. filling materials and covers. 2 Normative references The following referenced document is indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 22880:2004, Castors and wheels Requirements for castors for swivel chairs ISO 2007 All rights reserved 1